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| Influence of Al2O3 content on the properties of CNTs reinforced copper matrix composites |
| CUI Zhao-wen, JIANG Li-kun, LIU Jian-jin, JIA Cheng-chang |
| Institute for Advanced Materials and Technology, University of Science and Technology Beijing, Beijing 100083, China |
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Abstract By employing the combination of mechanical alloying (MA), magnetic stirring process (MS) and spark plasma sintering (SPS) process, the influence of Al2O3 content on the properties of carbon nanotubes (CNTs) reinforced copper matrix composites was studied. Results show that wear rate of the composite is reduced by 70.9%-85.7% and Vickers hardness is increased by 11.6%-24.5% compared with pure copper. The copper matrix composite has the best comprehensive properties when adding 1.0% CNTs and 1.6%Al2O3 (mass percent), showing the relative density of 97.5%, Vickers hardness of 75.2 HV, thermal conductivity of 272.45 W/(m·K), and electrical conductivity of 4.39×107 Ω-1·m-1.
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Received: 12 January 2015
Published: 29 April 2015
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2015, Vol. 25 
